iwlwifi: mvm: implement new IPv6 offload API
The firmware API for IPv6 NDP/NS offload has changed again.
Implement support for the new API; this requires calculating
the solicited node address for each "target" address as it's
no longer ignored by the firmware.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/mvm/d3.c b/drivers/net/wireless/iwlwifi/mvm/d3.c
index 123a44f..d08c12b 100644
--- a/drivers/net/wireless/iwlwifi/mvm/d3.c
+++ b/drivers/net/wireless/iwlwifi/mvm/d3.c
@@ -67,6 +67,7 @@
#include <net/cfg80211.h>
#include <net/ipv6.h>
#include <net/tcp.h>
+#include <net/addrconf.h>
#include "iwl-modparams.h"
#include "fw-api.h"
#include "mvm.h"
@@ -381,14 +382,74 @@
union {
struct iwl_proto_offload_cmd_v1 v1;
struct iwl_proto_offload_cmd_v2 v2;
+ struct iwl_proto_offload_cmd_v3_small v3s;
+ struct iwl_proto_offload_cmd_v3_large v3l;
} cmd = {};
+ struct iwl_host_cmd hcmd = {
+ .id = PROT_OFFLOAD_CONFIG_CMD,
+ .flags = CMD_SYNC,
+ .data[0] = &cmd,
+ .dataflags[0] = IWL_HCMD_DFL_DUP,
+ };
struct iwl_proto_offload_cmd_common *common;
u32 enabled = 0, size;
+ u32 capa_flags = mvm->fw->ucode_capa.flags;
#if IS_ENABLED(CONFIG_IPV6)
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int i;
- if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
+ if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL ||
+ capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
+ struct iwl_ns_config *nsc;
+ struct iwl_targ_addr *addrs;
+ int n_nsc, n_addrs;
+ int c;
+
+ if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
+ nsc = cmd.v3s.ns_config;
+ n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3S;
+ addrs = cmd.v3s.targ_addrs;
+ n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3S;
+ } else {
+ nsc = cmd.v3l.ns_config;
+ n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L;
+ addrs = cmd.v3l.targ_addrs;
+ n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L;
+ }
+
+ if (mvmvif->num_target_ipv6_addrs)
+ enabled |= IWL_D3_PROTO_OFFLOAD_NS;
+
+ /*
+ * For each address we have (and that will fit) fill a target
+ * address struct and combine for NS offload structs with the
+ * solicited node addresses.
+ */
+ for (i = 0, c = 0;
+ i < mvmvif->num_target_ipv6_addrs &&
+ i < n_addrs && c < n_nsc; i++) {
+ struct in6_addr solicited_addr;
+ int j;
+
+ addrconf_addr_solict_mult(&mvmvif->target_ipv6_addrs[i],
+ &solicited_addr);
+ for (j = 0; j < c; j++)
+ if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr,
+ &solicited_addr) == 0)
+ break;
+ if (j == c)
+ c++;
+ addrs[i].addr = mvmvif->target_ipv6_addrs[i];
+ addrs[i].config_num = cpu_to_le32(j);
+ nsc[j].dest_ipv6_addr = solicited_addr;
+ memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN);
+ }
+
+ if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL)
+ cmd.v3s.num_valid_ipv6_addrs = cpu_to_le32(i);
+ else
+ cmd.v3l.num_valid_ipv6_addrs = cpu_to_le32(i);
+ } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
if (mvmvif->num_target_ipv6_addrs) {
enabled |= IWL_D3_PROTO_OFFLOAD_NS;
memcpy(cmd.v2.ndp_mac_addr, vif->addr, ETH_ALEN);
@@ -419,7 +480,13 @@
}
#endif
- if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
+ if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
+ common = &cmd.v3s.common;
+ size = sizeof(cmd.v3s);
+ } else if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
+ common = &cmd.v3l.common;
+ size = sizeof(cmd.v3l);
+ } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
common = &cmd.v2.common;
size = sizeof(cmd.v2);
} else {
@@ -438,8 +505,8 @@
common->enabled = cpu_to_le32(enabled);
- return iwl_mvm_send_cmd_pdu(mvm, PROT_OFFLOAD_CONFIG_CMD, CMD_SYNC,
- size, &cmd);
+ hcmd.len[0] = size;
+ return iwl_mvm_send_cmd(mvm, &hcmd);
}
enum iwl_mvm_tcp_packet_type {